Note 30 — Chapter IX · Place-name Stories

It should perhaps be looked for near Brechfa, where there is a Hafod Grugyn, and, as I am told, a Garth also which is, however, not further defined. For it appears that both Brechfa and Cayo, though now in Carmarthenshire, once belonged to Keredigion: see Owen’s Pembrokeshire, p. 216. But perhaps another spot should be considered: J. D. Rhys, the grammarian (p. 22 above), gives in the Peniarth MS. 118 a list of caers or castles called after giants, and among them is that of Grugyn in the parish, he says, of ‘Ỻan Hilar.’ I have, however, not been able to hear of any trace of the name there, though I should guess the spot to have been Pen y Casteỻ, called in English Castle Hill, the residence of Mr. Loxdale in the parish of Ỻanilar, near Aberystwyth. ↑